ATHENA 4T Forged Piston 82.96mm 250CC Pin 16 Big Bore Cylinder for Yamaha YZ 250 F

The ATHENA forged 4T piston, with a bore of 82.96 mm, is designed for Big Bore cylinders of 250 cc, offering high performance and a quick response in every situation. With a compression height of 22.20 mm, this piston ensures optimized combustion, contributing to superior engine efficiency. Its configuration includes a connecting rod pin diameter of 16 mm, with dimensions of 8.5 mm by 44 mm, ensuring perfect compatibility and stability during operation.

The piston is equipped with two rings that work in synergy to reduce friction and improve sealing, while the compression ratio of 12.5:1 allows for maximizing the power output of the engine. The forged type of the piston provides superior strength, making it ideal for more demanding applications. Additionally, the biconical design of the pin contributes to greater resistance and better force distribution, ensuring that each stroke of the piston is smooth and efficient. With these features, the ATHENA 4T piston represents an excellent choice for those looking to push their motorcycle's performance to the maximum.

• Bore: 82.96 mm
• Designed for 250 cc Big Bore cylinders
• Compression height: 22.20 mm
• Connecting rod pin diameter: 16 mm
• Pin dimensions: 8.5 mm by 44 mm
• Two rings to reduce friction and improve sealing
• Compression ratio: 12.5:1
• Type: forged
• Biconical design of the pin

Race Use Only Product - Not intended for street use